Ex-Nottingham Forest manager Paul Hart and academy coach Mick Halsall have been put in temporary charge of Notts County, BBC Radio Nottingham reports.
Halsall and 61-year-old Hart, who was interim academy boss, have taken over after Shaun Derry's sacking on Monday.
Notts are just one place above the League One relegation zone, above the bottom four on goal difference only.
They had hoped to appoint a new manager before facing fellow strugglers Scunthorpe United on Saturday.
Notts have won just three games in 24 league matches since November.